Telegraph-sounder



{No Model.)

P. L. VAN EPPS. TELEGRAPH SOUNDER.

Patented May 21, 1889.

WITNESSES:

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UNITED STATES PATENT OFFICE.

FRANK L. VAN EPPS, OF HUDSON, MICHIGAN.

T ELEGRAPH-SOUNDER.

SPECIFICATION forming part of Letters Patent No. 403,626, dated May 21, 1889.

Application filed January 30. 1889. Serial No. 298,083. (No model.)

To aZZ whom it may concern.-

Be it known that I, FRANK L. VAN EPPs, of .lludson, in the county of Lenawee and State of Michigan, have invented a new and Improved Tclegraph-Sounder, of which the following a specification, reference being had to the annexed drawings, forming a part thereof, in which Figure l is a plan view of my improved telegrapli-sounder. Fig. 2 is a longiti'idinal section taken on line :1: so in Fig. 1. Fig. 3 is a transverse section taken 011 line 1 y in Fig. 2. Fig. :4: is a transverse section through the armaturelever bearing of a modified form, and Fig. 5 is a side sectional elevation of one of the bearings of a modified form of the sounder.

Similar letters of reference indicate correspondin g parts in all the views. 7

The object of my invention is to construct a telegraph-sounder in which the bearing of the armature-lever will be non-adjustable and in which the wear of the armature-lever will be automatically taken up.

My invention consists in the construction and arrangement of parts, as willbe hereinafter fully described and claimed.

To the base-board A of the sounder is attached a metallic bed-plate, l3, furnished with the frame 0 for limiting the motion of the armature-lever D, and provided in the present case with the double standard E, having the npwardly-projecting arms a, furnished in their upper ends with the approximately semicircular notches I), for receiving the rod F. The rod F is provided with heads cat opposite ends, which fit over the outer surfaces of the arms a, so as to prevent longitudinal movement of the said rod.

The armature-lever D is provided with the cross-bar G, in which is formed an approximately semicircular groove, (Z, fitted to the rod F, and of suflicient length to fill the space between the heads (2 of the said rod. The armature-lever D is prolonged beyond its bearing and provided with a set-screw, II, which receives one end of the spiral retractile-spring e, the other end of which is 0011- nected to a hook, f, attached to the base-board A. To the armaturelever D is secured the armature I, which extends over the poles of the elcetroanagnet J, o'f the usual description,

secured to the base-plate B. The upward. 'movement of the armature-lever D is limited by the screw g, inserted in the upper arm of the frame C, and its downward motion is limited by the screw 72, passing through the armature-lever D and adapted to strike upon the horizontal part oi? the frame 0.

By means of myimprovementit is possible to remove the armature-lever from the sounder without the necessity of turning screws or throwing any of the parts out of adjustment. After disengagin the spring c from the hool; f the armature-lever D may be lifted from its bearings and removed from the instrument, and the rod F may be taken from its seats in the standards E.

In the modification shown. in Figs. i and 5 the rod F is replaced by a pair of short steel cylinders, F, which are received in recesses in the arms a of the standard E, and in lieu of a semicircular groove extending entirely across the cross-arm G semicircular notches (7. are formed in the under surface of the ends of the cross-arm, which lit upon the steel cylinders F. The armature-lever D is held in place upon the rod F by the downward pull of the spring 0. As the said rod F or the surfaces of the cross-arm G or double standard E wear, the wear is continually taken up by the action of the said spring. All necessary adjustments are secured by means of the screws 9 7L. The tension of the spring c is adjusted, as in other instruments, by means of the screw H.

As the rod F is loosely placed in its bearings in the standard, it is able to roll each time the armature lever is drawn down, thereby distributing the wear upon all sides of the rod.

In carrying out my invention 1 do not limit or confine myself to the use of the double standard, as shown, as the invention is equally well adapted to a single standard neither do I limit myself to the application. of my improvement to sounders, as it may be applied to keys, relays, and other electrical instruments.

llavin g thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, in a telegraph-instrument, with the armaturedevcr and the standard, having registering curved recesses on IOU of the standard E, provided with one or more arms, a, having approximately semicircular their lower and upper surfaces, respectively, of a rolling, bearing-piece in' said recesses, substantially as set forth. v

2. In a telegraph-sounder, the combination of the standard E, provided With arms a, having approximately semicircular notches b in the upper ends thereof, the rolling rod F, resting and turning freely in the notches b and provided with the heads-c, and the armature-lever D, provided with the cross-arm G, having the approximately semicircular groove d receiving the upper side of said rod to allow the arm to rock on the rod and the rod to roll, substantially as specified.

3. In a telegraph-sounder, the combination to hold the armature-lever D down upon the rod F, substantially as specified.

FRANK L. VAN EPPS. Witnesses:

ITHAMAR P. SMITH, A. H. BoIEs. 

